Ephraim hambujer



(No Model.)

E. HAMBUJER.

LOOK. No. 415,816. Patented Nov. 26, 1889.

xii 7-5 19% 142mm Q g g 4 W 1% UNITED STATES PATENT OFFICE.

EPHRAIM HAMBUJER, OF DETROIT, ll'IIOHIGAN.

LOCK.

SPECIFICATION forming part of Letters Patent No. 415,816, dated November 26, 1889.

Application filed April 19, 1889. Serial No. 307,858. (No model.)

To all whom it may concern:

Be it known that I, EPHRAIM HAMBUJER, a citizen of the United States, residing at Detroit, county of \Vayne, State of Michigan, have invented a certain new and useful Improvement in Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a new and useful improvement in looks, the object being to construct a lock of simple and economical form and efficient in its operation, reducing the manufacture to the fewest possible number of parts, preventing the liability of breakage, the disarrangement of parts, as well as diminishing the cost in a very material degree.

I carryout my invention as more fully hereinafter specified, and pointed out in the claims, and more particularly illustrated in the accompanying drawings, in which- Figure 1 is a view in elevation embodying my invention. Fig. 2 isa section of the same on the line as 00, Fig. 1. Fig. 3 is an end view; and Fig. 4 a View in elevation, showing the latch thrown back in an unlocked condition, Fig. 1 showing the latch in a locked position.

I carry out my invention as follows:

A represents the face-plate of the lock. The front of the plate is provided with an elongated slot (1, through which the latch is thrown when in a locked position, and vice versa.

B denotes the latch, constructed with an elongated slot 1), preferably intermediate the extremities of the latch, and through which a post O engages the latch to the face-plate in such a manner that the latch may have a swinging movement thereupon, so as to be thrown into the positions shown in Figs. 1 and- 4 for locking and unlocking the article to which the lock is attached. The latch is also provided with a recess, as at b, with suitably-shaped edges, as at b b constituting bearing-faces for the key D. The key will fit upon the post 0, and as it is turned will form contact with the keyway-faces h b to operate the latch. If thelatch be, for instance,

in the position shown in Fig. 1that is, in a locked conditionand it is desired to unlock it and throw the latch into the position shown in Fig. 4c, the key is applied upon the post C, and the edge of the key coming in contact with the edge or keyway-face b throws the forward end of the latch into the position shown in Fig. 4:, the latch also having a forward movement by means of the elongated slot wallowing the latch to slide forward on the post 0. Toward the rear end 'of the latch I engage upon the plate A a suitable guide roller or bearin g E. It will be noticed that the keyway edges or faces 12 b are so constructed that as the end of the key strikes the-edge b the latch being in the position shown in Fig. l, the latch is first forced forward sufficiently to allow the rear end to clear the bearing E, when the further throw of the key will swing "the latch over, retracting the forward end within the elongated slot a, as shown in Fig. 4, the rear end of the latch swinging past the bearing E. To look the latch, the key is enengaged therewith, and bearing upon the appropriate keyWay-edge of the latch throws the rear end of the latch past the bearing E and slightly rearward, thereby throwing the forward end of the latch into proper position. The forward edge of the latch striking against the end of the orifice or slot a, as at a, will obviously prevent the throwing of the latch in the contrary direction, and so the latch is always held securely in place for action as required, while there are no parts of the device liable to break or get out of order. The construction of every part is also very simple and economical.

The roller or bearingE, it will be seen, effectually prevents the latch from being swung over after being looked, as shown in Fig. 1 without the latch being first thrown forward to clear the bearin Thus there is no possibility of inserting a thin blade between the edge of the face-plate and the adjacent hasp and swinging the latch out of engagement, since it can only be moved by a key.

Another advantage of my construction is due to the fact that it is impossible to remove the key from the look without swinging the latch into a locked position. Thus when the lock is engaged upon the wood F it will be seen that when the key is inserted through the key-hole f to unlock the latch the end D of the key is rotated into such position that it cannot be withdrawn without being turned so as to bring the end D into line with the key-hole,while it is also evident that the key cannot be so turned into position for removal without throwing the latch into a locked position. My invention, therefore, effectually guards against the possibility of leaving an article to which it is appliedas, for instance, a drawerunlocked.

I prefer to construct the front of the plate A with an imvardly-directed flange a to engage in a corresponding recess f in the wood. I design, also, to construct said front of the plate with points a a substantially in line with the front a of the said plate, said points adapted to be driven into the wood to hold the lock in engagement therewith, and answering said purpose, instead of screws, to unite the lock to the wood.

What I claim as my invention is- 1. A look consisting of the combination,;

with a face plate, of a latch constructed with keyway-faces adapted to be engaged by a key, said latchpivotally connected with said plate between said keyway-faces, substantially as set forth.

2. A look consisting in the c01nbination,

plate and the wood on which said face-plate is engaged, the said wood being provided with a key-hole, of a latch provided with keywayfaces and with an elongated slotintermediate said faces, and a post secured to said face-plate through said slot, said elongated slot being out of coincidence with said key-hole when the latch is in an unlocked position, thereby preventing the key from being withdrawn While the latch is in an unlocked position, substantially as set forth.

5. In alock, a face-plate A, constructed with the front face a and the rearwardly-extending flange a substantially as set forth;

6. In a look, a face-plate A, provided with a front face a and points 60 61 for securing the face-plate in position.

'7. The herein-described lock, comprising a faceplate, a post projecting from the faceplate and fixed thereto, a latch provided with an elongated slot, through which it is pivoted on the post, a key-seat in the side of the latch in proximity to the pivotal post, and a key fitted to turn about the post in engagement with the latch, and thereby both reciprocate and swing the latch, substantially as set forth.

In testimony whereof I sign this specification in the presence of two witnesses.

EPHRAIM I'IAMBUJER.

Witnesses:

N. S. WRIGHT, ALFRED H. MILLER. 

